One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(9,10,12,13)(11,14,15,16)(17,18,20,22)(19,21,23,24)(25,26,28,30)(27,31,32,29)(2,5)(6,8)(10,13)(14,16)(17,19,20,23)(18,21,22,24)(25,27)(26,29)(28,32)(30,31)(3,7)(6,8)(9,11,12,15)(10,14,13,16)(17,18)(19,21)(20,22)(23,24)(25,27,28,32)(26,29,30,31)(1,2)(3,6)(4,5)(7,8)(9,10)(11,14)(12,13)(15,16)(17,19)(18,21)(20,23)(22,24)(25,26)(27,29)(28,30)(31,32) involution — undirected(1,3)(2,6)(4,7)(5,8)(9,11)(10,14)(12,15)(13,16)(17,18)(19,21)(20,22)(23,24)(25,27)(26,29)(28,32)(30,31) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.